Allen-Bradley 1440-SDM02-01RA, User Manual, Page: 111 / 168

Rockwell Automation Publication 1440-UM001D-EN-P - September 2016 111
Chapter
4
Trends
Triggered
The XM-124 module can collect a triggered trend. A triggered trend is a time-
based trend that is collected when a relay on the module is activated, or when
the module receives a trigger event.
Once the triggered trend is configured, the XM-124 module continuously
monitors the trended measurements. When a trigger occurs, the module
collects additional data as specified by the Post Trigger
parameter. The XM-
124 module can also store the spectrum or waveform at the time of the trigger.
The XM-124 module can only store one triggered trend. Unless the triggered
trend is latched, the trend data is overwritten with new data when the next
trigger occurs.
The triggered trend parameters define the trend data that the module collects.
Use these parameters to select the measurements included in the trend records,
the interval between trend records, and which relay triggers (activates) the
collection of the trend data.
Topic Page
Triggered 111
SU/CD 113
IMPORTANT The Triggered Trend parameters are not included in the EDS file and
cannot be edited using generic configuration tools such as RSNetWorx™
for DeviceNet software.
Table 30 - Triggered Trend Parameters
Parameter Name Description Values/Comments
Enable Triggered Trend Measurements Enables/disables the triggered trend measurements. Select to configure
the triggered trend measurements. Check to enable.
Clear to disable.
Select Measurements Sets the measurements to be collected and stored in the module. 1…16 measurements can be selected.
Number of Records The maximum number of measurement sets that can be collected in the
trend buffer. The measurement sets constitute the trend data.
The Number of Records is automatically calculated
based on the number of Trended Measurements
selected.